I've done the same thing, Mel. Quit drinking for a few days before a blood test and suddenly the levels aren't that bad. Nobody is fooled. The levels should be much better.
I agree. Start with your husband. Tell him you're drinking. But first, I think I'd decide what, exactly, I want to do (detox then treatment then aftercare, etc) before talking to him. That way he's less likely to see this as an open ended death sentence for you.